st: Question regarding the F test after 'xi' command.

["Hui Wang" <jackie_stata@hotmail.com>]

Hi, All,

When we use xi command in regression, say "xi: reg y x1 i.x2", and suppose 
that the discrete variable x2 takes 10 possible value. After the regression, 
what is the command to test the joint significance of the x2 dummies 
generated by stata?

I've tried the following:

xi: reg y x1 x2

xi: test i.x2;
test _Ix2_*;
test _Ix2_1-_Ix2_9;

Neither of them works. (I really do not want to enter something like: test 
_Ix2_1 _Ix2_2 ... _Ix2_9.)

Please tell me your solution. Thanks.

Jackie

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